Here, in 1425, Manuel II. was laid to rest after his long and troubled reign.[388] Beside him were buried his wife Irene (1450)[389] and his three sons, Andronicus (1429),[390] Theodore (1448),[391] John VI. Palaeologus (1448).[392] Here also was placed the tomb of the Empress Maria of the house of Trebizond, the fourth wife of John VII. Palaeologus;[393] and not far off was the grave of Eugenia, the wife of the despot Demetrius and daughter of the Genoese Gatulazzo, who had helped to overthrow John Cantacuzene and to recover the throne for the Palaeologi.[394] As we follow to the grave this procession of personages so closely associated with the fall of Constantinople, one seems to be watching the slow ebbing away of the life-blood of the Empire which they could not save. In 1407 John Palaeologus, then heir-apparent, added to the endowments of the church by giving it a share in the revenues of the imperial domains at Cassandra.[395] It would appear that the affairs of the monastery about this time were not in a satisfactory state, for on the advice of the historian Phrantzes they were put for settlement into the hands of Macarius, a monk from Mt. Athos.[396] A protosyngellos and abbot of the Pantokrator was one of the ambassadors sent by John VII. Palaeologus to Pope Martin V. to negotiate the union of the Churches.[397] [Illustration: PLATE LXIV. S. SAVIOUR PANTOKRATOR. ARCH IN THE NORTH WALL OF THE SOUTH CHURCH, SEEN FROM THE SOUTH CHURCH, LOOKING NORTHWARDS.] [Illustration: S. SAVIOUR PANTOKRATOR. ARCH IN THE NORTH WALL OF THE SOUTH CHURCH, SEEN FROM THE CENTRAL CHURCH, LOOKING SOUTHWARDS. _To face page 230._]